*,
body {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background: linear-gradient(45deg, #111, #222);
  color: azure;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  flex-direction: column;
}
header {
  position: fixed;
  top: 10px;
}
footer {
  position: fixed;
  bottom: 10px;
}
.box {
  position: relative;
  width: 450px;
  height: 450px;
  border: 10px solid #333;
  background: #444;
  display: flex;
}
.box .trafficLights {
  width: 120px;
  height: 340px;
  border-radius: 60px;
  background-color: #333;
  margin-bottom: 20px;
  min-height: 120px;
  position: relative;
  left: 5px;
  top: 50%;
  transform: translateY(-50%);
}
.box .trafficLights .light {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: #333;
  background: var(--clr);
  box-shadow: 0 0 100px 50px var(--clr);
  display: none;
}
.box .trafficLights .light:nth-of-type(1) {
  top: 5px;
}
.box .trafficLights .light:nth-of-type(2) {
  top: 50%;
  transform: translateX(-50%) translateY(-50%);
}
.box .trafficLights .light:nth-of-type(3) {
  bottom: 5px;
}
.box .trafficLights .active {
  display: block;
}
.box .btn {
  position: absolute;
  right: 100px;
  bottom: 50px;
  width: 140px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  border-radius: 25px;
  background: #333;
  color: #888;
  letter-spacing: 2px;
}
.box .message {
  position: absolute;
  top: 50px;
  right: 20px;
  width: 250px;
  height: 250px;
  border-radius: 25px;
  background: #333;
  color: #888;
  font-size: 28px;
  letter-spacing: 2px;
  margin-bottom: 20px;
  line-height: 50px;
  padding: 10px;
}
